Adjustable arch for cultivators.



. so I 3 an adjusting-wheel 6, which is formed with v No. 742,735.

Patented new: 21. 190:.

PATENT OFFICE.

HARRIS ON B. PORTER, OF BUDA, TEXAS.

ADJUSTABLE ARCH FOR CULTIVA TORS.

SPECIFICATION forming part ofiLettei-s Rate-at Ho. 742,735, dated October 97. 190$,

Application filed hour] 15. 1903. Seth! $a-139.23l. (Fe moduli To-aH u-leomifmay concern:

Be it known that l, llmmtsox 1;. PORTER, a

, citizen of the United States, residing at Buda,

in the county of Hays and State of 'lex-as, have invented certain new and uset'nl Improvements in Adjustable Arches for Cultivators; and I do declare the following to he a full, clear, and evact description 0! the invention, such as will enable others skilled in the art to which it nppcrtains to make and use the same.

My invention is an improved adjustable arclrfor cnltivators; and it consists in the peculiar construction and combination of doviceshcrcinaiter fully described and claimed. The object of my iuvention'is to provide an improved cultivator-arch having arms mounted for movement toward and from each other and a shiftable adjusting device connccting the arms and adapted wh-n shifted to move the arms toward and from each other, whereby the cultivator-beams may be shifted laterally to dispose the cultivating implt ments at any desired distance apart; while the cultivator is in operation and without loss of time.

In the accompanying drawings, Figure l is an elevation, partly in section, of'a cultivatorarch illustrating a preferred embodiment of my invention. Fig. 2 is a similar view of the upper portion of the same, showing another embodiment of my invention; and Fig. 3 in-a similar view showing another modification thereof. Fig. 4 is a detail viewof the block to which the upper ends of the arms are piv' otally connected in the form of the invention shown in Figs. 1 and 2. Fig. 5 is a diagrammatic rear elevation of a'sulky-cultlvator provided with my improved adjustable arch. In the construction of my improved cultivator-arch I provide a pair oi arms 1, which are connected together at their upper ends for movement toward and from each other. In Figs. 1 and 2 the upper ends of the arms 1 are pivotally connected, am at 2, to a block 3, which comprises a pair of longitudinallyseparahle sections -1- 5, con nccted tO-gctlicr by the bolts 2, which are also employed to pivot the upper ends of the arch-arms thereto.

In Fig. 1 of the drawings there isemployed a depending huh-spindle 7, adapted to revolve in a vertical opening 8, made in the opposing sides of the sections 4 5 of the block 3, at the center thereof, and the said ,hnbspindle is provided with annular flanges 910, which bear, re pectively, on the npper and lower sides of the said l\l0cli,:\nd thereby serve to swivel the said wheel 6 thereto, as willbe understood. The huh-spindle 7 has a screwthreaded bore 11, which is engaged by a vertically movable adjust lint-screw 13, the lower end of which is attached to a vertically-shiftahle adjusting device, here shown as a block; or (toes-head 13, provided near its ends with antit'riction-rollers 14, which operate in slots 15, made longitudinally in the arms 1, and which by reason of the upwardly-converging disposition of said arms 1 lie in upwardlyconverzing planes and enact with-the shift 'able block or cross-head 13, which connects the said arms together, to adjust the arms of the arch toward and from each other, according' to the movement of the block 13in an upward or downward direction, by the turning of the lmnd-whccl 6. In order to cause the ends of the said block or croas he-ad 13 to move in unison and prevent side stress from being applied to the adjnstings-crew, I provide the arms 1 on their inner opposing sides with racks 16, which are engaged by a pair of intermcshing gears 17, which are journaicd in bearings with which the block or crosshead 13 is provided.

In the embodiment of my invention shown in Fig. 2 the hand-wheel t3, her'einhefore described, is discarded. The block 3, which connects the upper ends of the arms 1 together, constitutes a nut engaged by the adjnsting-screw 12*, and the adjl1sting-wheelt3 cultivator-arch are directly pivoted together, .as at 17, and the adjusting-screw shown in Figs. 1 and 2 is discarded,1he gears 17serving by coaction with the racks in the opposmg sides of the arch-arms to move the connectingdilocle or crosshead justing-wheel 6 being. connected to the jODT- other, a device connecting the arms together nal of one o! the said gears.- and shift abie thereon toward and from the From the foregoing dm cription, taken in pivotal connection thereof, and an adjusting- 5 connection with the accompanying drawings, screw to operate the said device and thereby the construction, mode of operation, and admore saidurms toward and from each other. 35 vantages of my invention will be readily np- 3. A cultivator-arch having arm: pivotaliy i parent, itis thought, without requiringa more connected together and thereby adapted for extended explanation; movement. toward and from each othcig said so I do not desire to limit myself to either of nrnis having raeka' disposed longitudinally the forms of my invention here shown and thereof, a shi-itahle adjusting device connect- 40 t .descrlbed, as it is evident that other modiiiing the's'aid arms, and gears carried by said cations may be made therein without. depiirtdeviceandengngiugtherespcclive racks, subing from lhospiritof my invention mid withstantially as described.

5 in the scope of the appended clnim. 4. A GUl-th'ltlOF-fll'flll having arms pivotniiy Having thus described myinvontion, what connected together and thereby adapted for 4; I 'cl ni m as new. and desire to secure by Lettcrs' movement. toward and from each other, said l Patent of the United States, isarms' having nicks disposed longitudinally 1. A cultivator-arch having anus pivotnlly thereof, a shiftnble adjusting device connect to connected together at, their upper ends and ing tho said arms, and 'i-nterineshed gears (38b thereby adnpted for angular movement to ried hy snidderico and engaging the respec- 50 Ward and from each other, a connecting detive racks, substantially as described. vice shil'tnhle on the said arms longitudinally In testimony whereof I have hereunto set of the latter to move them toward and from my hand in presence 0! two subscribing wit.-

:5 each olher and mechanical means which ndnesses.

justannd fixes said conuectingdovice at a pre- HARRISON l PORTER.

i determined point, substantially as described. Witnesses;

I 2. A cultivator-arch hnt'ingm'ms pivotally \VILI'. Gnoos, g connected together and thereby adapted for OTTO GRQOS.

13 and the ad-tang'ui'ar movement toward and fror n each 3o 

